Etiense boileau



(No Model.) 7

E. BOILEAU.

BOILER FURNACE;

No. 335,207. Patented-Feb. 2,- 1886.

N. PETERS, Phaw-Lnho n mr. Walhl'ngion, D. c,

NITED STAT Es ETIENNE BOILEAU, OF ST. LOUIS, MlSSOURT.

BOILER-FURNACE.

SPECIFICATION forming part of Letters Patent No. 335,207, dated February2, 1886.

Application filed April 6, 1885. Serial No. 161,254. (No model.)

To all whom it may concern.-

Be it known that I, ETIENNE BOILEAU, of the city of St. Louis, in theState of Missouri, have invented a certain new and useful Improvement inBoiler l urnaces, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification.

Figure l is a section at 1 1, Fig. 2. Fig. 2 is a longitudinal verticalsection at 2 2, Fig. 1. Fig. 3 is a detail section at 3 3, Fig. 2.

t The boiler A may be ofany desired construc- B is the bridgewall, O theash-pit, D the fire-front, E the fire-grate, and F the furnacechamber.

G G are plates or tiles, of fire-clay, metal, or other suitablesubstance, which are hinged at the front edge, so that the other edgemay be raised and lowered at will. These plates or tiles are secured tothe pintle-bars H, which extend through the boiler-setting orfurnacewall I, and carry arms J, by which they may be turned to raise orlower the plates. These plates or tiles G are shown of curved form, (theconvex side being at top,) and having ribs 9 upon the under side, tostiffen the plates and to at once heat the entering air and cool theplate. The air enters beneath the plates G through holes K, passingthrough the fire-front over the furnace-doors L, the air-current takingthe course shown by the arrows, being deflectcd downward by the plates,(when they are in their normal orlower position, as shown by full linesin the drawings.)

The plates or tiles G may be made with corrugations, if preferred.

There are two of the plates or tiles shown, which have independentmovement, and the space at 9 between them is covered by a lapplate, M,forming a break-joint, this plate being hinged to the fire-front at at,so that it is capable of being lifted with either of the plates G. Theupper position of the plates G and M is indicated by dotted lines, theposition of the arm J at such time being indicated in the same manner.Ahook or other means may be provided for holding the arm J down, andthus keeping the plate G elevated.

The purpose of the plates or tiles Gis to enable the dividing thefurnace-chamber into two divisions, the main division being marked F,and the other F. The coal is fed into the front division, F, where itbecomes more or less coked, the gas escaping beneath the rear edge ofthe plates G, and being brought in direct contact with the burning fuelin division F. The gas is mixed with air that enters through the holesK, and which has become heated in passing through the chamber F. Vhcnthe coal has become coked in the chamber F, it may be pushed backwardinto the chamber F.

To allow access to be gained to the chamber F for the purpose ofstirring the fire, or for any other purpose, the inner edges of theplates G are thrown up by the depression of the arm or handle J.

I have shown two of the plates G in the furnace; but it is obvious thata single plate or tile may be used in place of the two, or that morethan two may be used.

The plates G may have the parts which are subjected to the greatest heatformed of or covered with tire-tile in cases where the rest of the plateis of metal.

The ribs may be made of any preferred form or size.

I am aware that it has been proposed to pro vide a furnace with anopening for the admission of atmospheric air to the lire-box, and toplace on the inside of said fire-box opposite said opening a hingeddeflector for directing the current of air to any desired part of thefurnace, or for closing said opening entirely when the atmospheric airis not needed to aid combustion; but this is not the equivalent of myinvention.

I claim 1. A partition extending transversely in a boiler-furnace fromside to side thereof, hinged at the front edge, so that the free edgemay be thrown upward, for the purpose set forth.

2. A partition extending transversely in a boiler-furnace from side toside thereof, secured to a pintle-bar turned by an arm extending fromthe boiler-setting.

3. A partition extending transversely in a boiler-furnace from side toside thereof, with nace and an overlapping hinged plate breakaperturebetween the partition and the furing the joint or gap between theplates, subnace bottom or grate, and having ribs upon stantially as andfor the purpose set forth.-

its front side, substantially as and for the pur- ETIENNE BOILEAU. 5poses set forth. \Vitnesses:

4. The combination of two hinged partition- SAML. KNIGHT,

plates extending transversely in aboiler-fur- I GEO. H. KNIGHT.

